oil pan removal m103?

[JEdwards]

After an attempt to change my own oil, and almost stripping the bolt, I realized that the prior owner of the car did one of 2 things, either put the bolt back on with an impact gun, or used a wrench the size of a person to torque it so tight, that conventional methods will not take it out. The problem now becomes, that I have to get this fixed. I have access to multiple donor cars, and can get another oil pan no problem. However, after searching cannot find any information on this job.

What is involved in removal of an m103 oil pan? I understand there is a gasket, and then what, just bolts? Is this something that can be done quickly, or should I let my mechanic handle it? In my readings, it becomes apparent that it would be more involved to tap out the bolt and set a new one.

I don't have access to a topsider/called around to oil change places to see if they have one, but none of them do (apparently, but you think they would). Instead they want to put in a temporary plug, but the word temporary scares me, and I don't want anything temp on my engine that could be another weak link and pos. ruin my day when cruising down the highway at 80.